◎ 题干
—How was your day off. Yesterday?
—Perfect! It was _____ birthday of my grandpa's. We had a big family celebration.  

A. seventy
B. seventieth
C. the seventieth
◎ 答案
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◎ 解析
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◎ 知识点
    根据魔方格专家分析,试题“—How was your day off. Yesterday?—Perfect! It was_____ birthday of my grandpa's. We had a big family celebration. [ ]A. seventyB. seventiethC. the sevent…”主要考查了你对  【定冠词(the)】【序数词】  等知识点的理解和应用能力。关于这些知识点的“档案”,你可以点击相应的链接进行查看和学习。